Ripping-saw protector.



PATENTED AUG. 30, 1904.

J. A. JACKSON.

RIPPING SAW PROTECTOR.

APPLIOATION FILED NOV. 18. 1901.

2 SHEETS-SHEET 1.

NO MODEL.

Lil-masses haw i z z'a 2/223 No. 768,663. PATENTED' AUG. 30, 1904.

J. A. JACKSON.

RIPPING SAW PROTECTOR.

APPLIOATION FILED NOV. 18, 1901.

N0 MODEL. 2 SHEETS-SHBET 2.

' di q z sz Patented August 30, 1904.

FFICE.

PATENT JESSE A. JACKSON, OF OAKLAND, CALIFORNIA, ASSIGNOR OF ONE-THIRDTO D. V. DEUEL, OF OAKLAND, CALIFORNIA.

RIPPING-SAW PROTECTOR.

SPECIFICATION forming part of Letters Patent No. 768,663, dated August30, 1904.

Application filed November 18, 1901. Serial No. 82,8005 (N0 model.)

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Be it known that I, J user. A. J AOKSON, a citizen of the United States,and a resident of Oakland, county of Alameda, and State of California,have invented certain new and useful Improvements in Ripping-SawProtectors; and I do hereby declare the following to be a full, clear,and exact description of said invention, such as will enable othersskilled in the art to which it most nearly appertains to make, use, andpractice the same.

My invention relates particularly to a protector for ripping-saws; andit consists to provide a series of independent movable teeth securedthereon and of automatic adjustable horizontal means, and furtherconsists in the construction and arrangement of its various parts, aswill be more fully described hereinafter.

The object of my invention is to produce a simple and convenient deviceadapted to be applied to any ordinary-constructed rippingsaw, referencebeing had to the accompanying drawings, which form part of the followingdescription, in which Figure 1 represents a side elevation of anordinary ripping-saw provided with my improved protector in position.Fig. 2 is a front end elevation of Fig. 1. Fig. 3 is a perspective viewof my improved protector broken away, showing particularly the movableteeth secured thereon. Fig. 4 is a sectional view of Fig. 3, showingparticularly the working of the movable teeth. Fig. 5 is a longitudinalsection of my improved supporter whereby the protector can beautomatically adjusted horizontally, and Fig. 6 is a cross-sec tiontaken from line 1 to 1 of- Fig. 5.

Similar letters refer to similar parts throughout the drawings.

The frame A, with its table B, the circular saw C, and the adjustableguide a, constitute a completed ordinary ripping-saw upon which myimproved protector is mounted. This protector consists of a metallicplate D, of sufficient length and width and bent correspondingly to thediameter of the saw, above which it is secured.

The forward end 6 and the rear end 0 of the plate are preferably curledoutwardly and inwardly, so that in operation the lumber could slideeasily beneath. The rear end, however, is thus curled particularly forornamentalpurposes, while the forward end provides suitable means tosecure the movable teeth (Z, which are held in position by means ofshaft E, placed within the aperture formed along the width of the plateat the extreme end of the inward curl. These teeth are preferably madeangular in shape and have a sharp end dropping downward beneath theplate, while the other end is round, corresponding with the shape of thecurled end of the plate, and sufiiciently broad to provide a centralaperture corresponding in diameter to the size of the shaft E, to whichthey are secured independently to each other within the slots F, cutlengthwise through the plate, and at its extreme curled end, asparticularlyrshown in Figs. 3 and 4.

The slots are made long enough toward the ends of the plate to allow theteeth to move backward out of the way and to slide upon the lumber Gwhile passing beneath the plate until its rear end is reached, where theteeth drop out and rest perpendicularly against the shoulder a, asparticularly shown in Fig. A. Thus in this manner if the lumber happensto move; backward the sharp end of the teeth will naturally stick fastinto the wood and prevent thereby any further movements, and the sameresult can be obtained while the teeth rest perpendicularly against theshoulder e. The number of teeth is immaterial; but it is preferable tobe sufficiently large to cover lumber of various widths withoutreadjustment. i

The plate D is secured above the rippingsaw by means of a horizontalautomatic support H. This support consists of a cylindrical shell havinga narrow longitudinal slot f cut through its lower side. Within theshell and corresponding with its inner diameter is a solid block g,which is provided with a projection 7L, adjusted within the slot justmentioned and projecting downwardly. Against the projection justmentioned the plate D is secured crosswise by means of suitable bolts,as shown in Figs. 5 and 6.

The block g is adapted to slide freely within the shell and kept inposition by means of a coiled spring I, placed between the block and theforward end of the shell, which forces constantly the block toward therear end. Its movements, however, are controlled by the action of theadjustable guide a, which may be forced against the adjacent side of theplate D, as shown particularly in Fig. 5, thus moving and adjustinghorizontally the plate I) according to the width of the lumber to beripped. The rear end of the shell is reduced in diameter, as shown inFig. 5, and secured to the vertical adjustable bracket J, mounted uponthe table B, as shown in Figs. 1 and 2, and provided with a screw andhand-wheel 2T, secured to the bracket for controlling its V61 ticaladjustment.

I am aware that various changes can be made in the construction andshape of my invention without, however, affecting its scope, and,believing I have produced novel and useful improvements in ripping-sawprotectors and having described the same,

What I claim, and desire to secure by United States Letters Patent, is

1. In a ripping-saw protector consisting of a bow-shaped plate bentoutwardly at one end to form a support, a series of slots out upon saidsupport in combination with movable teeth secured within said slots,substantially as set forth and for the purpose specified.

2. In a ripping-saw protector consisting of a bow-shaped plate, having aseries of slots cut lengthwise thereon, in combination with independentmovable teeth secured within said slots, substantially as set forth andfor the purpose specified.

3. In a ripping-saw protector having a bowshaped and an outward andinward curled forward end, in combination with movable teeth secured tothe inward curl, substantially as set forth and for the purposespecified.

4:. A ripping-saw protector consisting of a horizontally and verticallyadjustable bowshaped plate, bent outwardly at its forward end, incombination with a series of independent teeth secured thereon,substantially as set forth and for the purpose specified.

5. In a ripping-saw protector consisting of a metallic plate, providedat one end with an upward support, slots out upon said plate, and thesupport, in combination with independent teeth secured to said supportby means of suitable shaft, and adapted to move freely within saidslots, substantially as set forth and for the purpose specified.

6. A ripping-saw protector consisting of a suitable plate provided witha series of independent teeth mounted thereon, in combination withautomatic adjustable means controlled by the position of thelumber-guide of the ripping-saw for adjusting said plate horizontally,substantially as set forth and for the purpose specified.

7. In a ripping-saw protector a horizontally-adjustable support,consisting of a cylindrical shell having a movable block securedtherein, in combination with a bow-shaped plate secured to said blockand provided with a' series of independent teeth secured thereon, saidsupport being controlled by the position of the lumber-guide of theripping-saw, substantially as set forth and for the purpose specified.

. 8. In a ripping-saw protector, abow-shaped plate curled outwardly atits forward end and having a series of independent teeth mounted. uponthe curled end, in combination with a horizontal support for said plate,consisting of an automatic adjustable block secured within avertical]y-adjustable cylindrical shell,said block depending in itsadjustment on the position of the lumber-guide of the ripping-saw,

substantially as set forth and for the purpose specified.

7 9. A ripping-saw protector consisting of a bow-shaped plate curledoutwardly at its ends and having a series of independent teeth se curedthereon, in combination with a horizontal support consisting of acylindrical shell, provided with automatic adjustable block securedtherein and to said plate, said block depending in its adjustment on theposition of the lumber-guide of the ripping-saw, substantially as setforth and for the purpose specified.

10. A ripping-saw protector consisting of a suitable plate provided withhorizontal adjustable support consisting of cylindrical shell having alongitudinal slot, amovable block socured within said shell andprojecting through the slot and means to move said block, said blockbeing limited in its movement by the engagement of the protector withthe lumberguide of the ripping-saw, substantially as set forth and forthe purpose specified.

In testimony whereof I have afiixed my signature, in presence of twowitnesses, this 3d day of October, A. D. 1901.

JESSE A. J AGKSON.

In presence of- E. P. VAUGHAN, A. S. PARIt.

